SWF - Expose Stunner API through omnichannel architecture

// Session API
editor.session.getAllNodesUUID() : Promise<string[]>;
editor.session.getEdgeByUUID(uuid: string) : Promise<Edge>;
editor.session.getNodeByUUID(uuid: string) : Promise<Node>;
editor.session.getDefinitionByElementUUID(uuid: string) : Promise<Object>;
editor.session.getNodeByName(name: string) : Promise<Node>;
editor.session.getNodeName(node: Node) : Promise<string>;
editor.session.getSelectedElementUUID() : Promise<string>;
editor.session.getSelectedNode() : Promise<Node>;
editor.session.getSelectedEdge() : Promise<Edge>;
editor.session.getSelectedDefinition() : Promise<Object>;
editor.session.selectByUUID(uuid: string) : Promise<void>;
editor.session.selectByName(name: string) : Promise<void>;
editor.session.clearSelection() : Promise<void>;

// Canvas API
editor.canvas.getShapeIds() : Promise<string[]>;
editor.canvas.getBackgroundColor(uuid: string) : Promise<string>;
editor.canvas.setBackgroundColor(uuid: string, backgroundColor: string):  Promise<void>;
editor.canvas.getBorderColor(uuid: string) : Promise<string>;
editor.canvas.setBorderColor(uuid: string, backgroundColor: string) : Promise<void>;
editor.canvas.getLocation(uuid: string) : Promise<number[]>;
editor.canvas.getAbsoluteLocation(uuid: string) : Promise<number[]>;
editor.canvas.getDimensions(uuid: string) : Promise<number[]>;
editor.canvas.center(uuid: string): Promise<void>;
editor.canvas.draw() : Promise<void>;